Sanding device



Aug. 11, 1931. B. RoTHsTElN SANDING DEVICE Fiied April 25. 195o 2y Sheets-Sheet l WITNESSES ATTORNEY Aug. 1l, 1931. I B RQTHsTElN 1,818,815

SANDING DEVICE Filed April 23. 1950 2 Sheets-Sheet' 2 A WlTNE-SSES INVENTOR W rlrzfifofezn A l BY n ATTORNEY Patented Aug. 11, 1931 NTE BARNETT ROTHSTEIN, F VVILKES-BARRE, PENNSYLVANIA SANDING- DEVlCE Application filed. April 23,

This invention relates to improvements in sanding devices and it consists of the constructions, combinations and arrangements herein described and claimed.

An object vof the invention is toprovide a road surface-sanding device especially adapted'to the mechanism and characteristics of a freely maneuverable vehicle such as an automobile.

Another object of the invention is to provide a sanding device in combination With the exhaust outlet or manifold of an engine of a vehicle in the foregoing class, for the purpose of spreading sand over a comparatively Wide Wheel-maneuvering surface.

Another object of the invention is to provide a control by the operation of Which the acts of opening the sand nozzle and diverting the exhaust gas from the muffler occur simultaneously.

Other objects and advantages Will appear in the following specification, referencebe- 'ing had to the accompanying drawings in which Figure 1 is a plan view of the chassis of an automobile, illustrating the installation of the improved sanding device.

Figure 2 is a perspective vieW of the foregoing control by Which simultaneous operation of the exhaust and sand nozzle valves is produced.

Figure 8 isa detail cross section of the exhaust valve taken substantially on the line 3 3 of Figure 1.

Figure il is a horizontal section taken on the line 4 4 of Figure 3.

Figure 5 is a side elevation of the automobile, a portion of the body and hood being broken away to disclose the location of the exhaust valve and auxiliary parts.`

Figure 6 is a section taken substantially on the line 6 6 of Figure 5, all parts of the automobile body and hood being omitted.

Figure 7 is a perspective view of one of the sand nozzles.

Figure 8 is a perspective vieW of the sand nozzle With the valve omitted to disclose the particular arrangement of distributing grooves. Figure 9 is a section on the line 9 9 of 1930. Serial No. 446,613.

Figure Gillustrating one of the ejector nozzles.

The herein disclosed sanding device is especially adapted to freely maneuverable vehicles which are intended to be propelled '55 over street surfaces as distinguished from vehicles which are confined to tracks in their movements. This particular use involves the requirement of spreading sand over a comparatively Wide road surface so that there may be a suiiiciently large sanded area upon Which the Wheels may have traction in the free maneuvering of the vehicle, for example When Working out of a parking space Where the road surface is covered With ice.

An automobile l is chosen for the illustration of one application of the sanding device, but it is Vto be understood that the device may be used With other freely maneuverable vehicles. The engine 2 (Fig. 5) has an exhaust outlet or manifold 3 Which is connected With a muiier 4 by means of a pipe 5 in which an exhaust valve 6 is interposed. This exhaust valve is part of the invention.

It comprises a dome or chamber 7 (Fig. 8) Which has a removable cover 8 at one end. The opposite end has a boss 9 in which the stem 10 of a valve member 11 has bearing. This valve member has an opening 12 80 Which is registrable either With the port 13 of the exhaust pipe 5 or the port lll (Fig. 3) of an exhaust branch 15. The stem 10 has an attached arm 16 through which the valve member l1 is turned. 85

Thus far it Will be understood thatY When the valve member 11 is turned to that position Where the opening 12 registers with the port 13 (Fig. 4) the gas from the outlet or manifold 3 Will flow directly to the exhaust 9o pipe 5 and out at the muffler 4. But When the valve member 11 is turned 90o so that the opening 12 assumes the full line position in Figure 4 the exhaust gas Will be diverted from the pipe 5 to the branch 15 to act as the 95 ejecting medium of the sand.

To this end the branch 15 has connection at 18 (Fig- 6) With a cross pipe 18 which at its ends is in communication With a pair of inclined sand pipes 20, 21 (Figs. 100

An ejector nozzle 49 (Fig. 9) incorporated in each pipe 20, 21 by means of a suitable fitting 50 screwed in a Y 51 will direct the exhaust gas into the adjoining pipe with such force as to promptly discharge the sand therein. Each of these pipes terminates in a nozzle 22 (Figs. 7 and 8) and since the construction of each of these is alike the description of one will suffice.

The nozzle 22 is flaring. That is to say, the body of it is associated as to end in a broad yet relatively thin sand orifice 23 (Fig. 3). The confronting upper and lower surfaces of the orifice are grooved at 24 to provide channels by which the spreading of the sand is directed to better effect. These grooves, especially those toward the sides of the nozzle, should be diverging so that vthe sand will be directed over a comparatively wide surface as denoted by the dotted lines 25 in Figure 1.

A valve or flapper 26 (Fig. 7) is hinged at 27 to the top of the nozzle in order to open from the bottom. This valve has an arm 28 with which a link 29 is connected. Thus far it will be understood that a pull `on `the link 29 will open the valve 26 so that sand can be discharged on the surface in front vof the wheels, itbeing observed in Figui-es land 5 that the nozzles are located in advance of the wheels.

The sand is supplied by a sand box or other reservoir 30 (Figs. 1, 5 and 6), situated beneath the cowl of the automobile or in any other convenient location. The cowl is chosen 4because the box 30 will not only -be concealed from view but will be stationed 4at lprobably the highest point obtainable. This enables the sand to flow by gravity into the said pipes 20, 21 which connect with the box at the pockets 31 (Fig. 6).

These pockets are produced in part by 1 and 9).

-arranging the bottom 32 on a curve. The

sand will naturally slide to the ends of the box 30 and keep the pockets 31 filled down to practically the last grain. A cover 33 (Fig. 6) may be removed if necessary, but lling of the sand box is accomplished through a capped tube 34 which is accessible after raising one side of the hood (Fig. 5). In practice the tube 34 will stand on a sharp incline so that the sand will run directly into the box upon filling.

The control for both the exhaust gas and sand lcomprises a bell -crank 35 (Figs. 2 and 5), the arm 36 of which ends in a knob for convenient hand operation. The other arm 37 is the place of pivotal connection of rods 38, 39 which respectively are pivoted to the valve arm 16 and with one arm 40 of a sccond bell crank 41.

rod 42 (Figs. 2 and 5) joins the arm 43 of this second bell crank with an arm 44 of a third bell crank. This third bell crank :is somewhat exaggerated i-n its form inasmuch as that part which would ordinarily be its axis actually comprises a shaft 45 (Fig. 1) extending crosswise of the chassis| 46 and journaled upon the latter at its ends in bearings 47.

At places adjoining these bearings the shaft 45 has arms 48 which complete the third bell crank. It is to these last arms that the links 29 of the valves 26 are connected. The assemblage of rods, bell cranks and links between the -bell crank 35 and the nozzle valves 26 is conveniently designated an articulated connection or linkage which acts as brought out in the following description In operation the driver will graspthe arm 36 (Figs. `2 and 5) and pull up on it `in order to divert the exhaust gas from the exhaust pipe 5 and at the same time open Ithe nozzle valves 26. @rdinarily the valve member 11 (Fig. 3) is regarded as being in the dotted line position of the opening 12 (Fig. 4) and the nozzle valves 26 as being closed.

The foregoing upward pull on the arm 36 (Fig. 2) draws the rod 33 to the right .and lowers the rod 39 thus to rock 4the bell crank 41 in the clockwise direction. This causes a forward pull on the rod 42 and a counter clockwise rotation of the third or rear bell crank. The consequent upward pull on the links 29 raises the valves 26 so that the exhaust gas discharged into the branch -15 by `the turning of the valve member 11 will forcibly eject a quantity of sand from the sand pipes 20, 21.

This ysand is distributed laterally by the grooves 24 so that rather wide areas 25 (Fig. 1) are covered. This spreading of the sand is regarded as of utmost importance undert several circumstances in the operation of the automobile, of which the following -is one example A motorist may find it necessary to park his automobile next to the curb of an icy street between two cars. In maneuvering his vehicle prior to leaving the parking space he will find that instead of getting his vehicle into an advantageous position, -he will gradually drift toward one or the other of the two parked cars. This is especially true if the street is inclined and the result is that it will be utterly impossible to get out without having the icy surface relieved.

By use of the invention a discharge of sand will cover relatively large areas .beneath and beside the rear wheels of the automobile. By manipulating the control bell crank 35 several times so much of the icy surface will be coated as to enable him to easily maneuver his vehicle in various directions in order to get out.

A single stream of sand directly vin the path of each rear wheel would not do. It is necessary to discharge a blast of sand.

In other words, it is necessary to discharge the sand in such a manner as to cover a sutciently wide area to enable the subsequent free maneuvering of the vehicle. This is accomplished first by the particular shape of each nozzle 22, second by the force of the exhaust gas.

The latter is under such pressure, especially when the engine 2 is speeded up for the pur ose, that the columns of sand in the pipes 2 2l will be promptly discharged upon opening the valves 26. At this point it should be stated that the exhaust valve 6 is not confined to the exact construction depicted. Since it is through this that the exhaust gas will low in the ordinary running of the engine its volume will be such that it will produce no back pressure on the g Another examplg of the specific need of a flaring discharge of sand as at 25 (Fig. 1) occurs when running over icy streets or roads. Should the vehicle exhibit any tendency toward skidding in one or the other direction, or in fact refuse to move at all, the motorist has only to operate the control bell crank 35 in the manner already ,indicated when either connection will be relieved.

The lateral spreading of the sand is especially eiHcacious in the instance of skidding of the vehicle. By instantly spreading layers of sand the vehicle can be promptly brought out of a skid. Were the sand laid down in a single relatively narrow stream this would be impossible.

While the construction and arrangement of the improved sanding device is that of a generally preferred form, obviously modiications and changes may be made without departing from the spirit of the invention or the scope of the claims.

I claim l. In combination with the exhaust outlet of the engine and a wheel of a freely maneuverable vehicle, a valve chamber in connection with the outlet having a pair of ports and a movable member with an opening registrable with either port, a sand reservoir having a discharge pipe and a branch communicating with one of the ports, a nozzle carried by the discharge pipe in advance of the wheel, a valve for the nozzle, and means for simultaneously opening the nozzle valve and moving the valve member t0 register its opening with the branch port for a discharge of exhaust gas into the discharge pipe.

2. A sanding device comprising a sand reservoir having a discharge pipe and a nozzle, a swinging flapper valve for the nozzle, a fluid valve chamber in connection with the pipe said chamber having a movable valve member, and means for simultaneously rotating the valve member and lifting the 

